Major-effect alleles at relatively few loci underlie distinct vernalization and flowering variation in Arabidopsis accessions.
Major-effect alleles at relatively few loci underlie distinct vernalization and flowering variation in Arabidopsis accessions.
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DOI：
10.1371/journal.pone.0019949
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发表时间：
2011
期刊：
影响因子：
3.7
通讯作者：
Dean C
中科院分区：
文献类型：
--
作者：
Strange A;Li P;Lister C;Anderson J;Warthmann N;Shindo C;Irwin J;Nordborg M;Dean C
我们已经探讨了在拟南芥加入春化的要求和响应的变化的遗传基础上，选择其表型的独特性。F2群体在不同环境中的表型，加上精细的映射，表明可能的致病基因。我们的数据支持FRI和FLC作为春化反应变异的主效QTL的候选者，并确定了一个弱的FLC等位基因，由一个类似突变体的转座子引起，有助于两个N.美国加入。他们还揭示了一些额外的QTL，有助于饱和春化后开花时间的变化。其中之一是FT基因座表达变异的结果。总体而言，我们的数据表明，不同的表型变异的春化和开花反应的拟南芥加入占的变化，已经独立出现在相对较少的主效应位点。
We have explored the genetic basis of variation in vernalization requirement and response in Arabidopsis accessions, selected on the basis of their phenotypic distinctiveness. Phenotyping of F2 populations in different environments, plus fine mapping, indicated possible causative genes. Our data support the identification of FRI and FLC as candidates for the major-effect QTL underlying variation in vernalization response, and identify a weak FLC allele, caused by a Mutator-like transposon, contributing to flowering time variation in two N. American accessions. They also reveal a number of additional QTL that contribute to flowering time variation after saturating vernalization. One of these was the result of expression variation at the FT locus. Overall, our data suggest that distinct phenotypic variation in the vernalization and flowering response of Arabidopsis accessions is accounted for by variation that has arisen independently at relatively few major-effect loci.
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